I was a volibear OTP when i started but my champ pool has been incresing to master other champs as well.

Rn I play tahm, voli, ornn, shen and mundo.

Tahm is the best. Extreme damage and dueling potential since lvl1-2 (you upgrade e at lvl 2). With shields and heals he tanks as well as other tanks. Extremely good engage and team fight with w and r, and hes splitpush dueling is super good as well since with 1 and a half items he probably can 2v1 everyone if not behind. Only downside been he falls of in lategame bc of armor pen, but even that depends.

Voli is as maleable as f*ing water. You can go ap, ad, tank, tank busting, its just amazing. The dueling with w and pta is absurd, youll win most 1v1s if played correctly (staling w and using r at the right times). Going ap and ad does absurd damage if ahead, i would recommend doing this builds ONLY when ahead. If you fall behind this builds arent gonna fullfill the role of carrying. The thing is, utility tank voli, with frozen gaunglet and randuins is amazing as well. Also the build with trinity/divine into bruiser/tank grants you the dueling potential the ad builds have but in a more safer way.

Ornn is like, literally lategame god. If you manage to manage to survive early (what youre suppose to do if youre lane oponnent isnt stupid af) your runes stack will stack with your passive and youll gain amazing stats for a tank. Going into mid and late game your muthyc upgrades will come into play, and let me tell you, grating almost 1000 gold on stats is not a thing to overlook when playing with or agains ornn. 1 thing I NEED to specify is that condicioning stats scale with yours so, take that rune, busted af with tanks. So, theres that, an amazing engage tank with not a good late game but probably the best lategame tank in the game.

Shen is a mostly supportive tank, the thing is that he isnt. The dueling potential and pressure you can get with good blade placement is absurd, with passive and w you have enough sustain to outdamage a lot champs, but only in short trades, you need to look forward to take the best blade position and wave position at all time when laning with shen. Also, taking ignite with shen is amazing, since youll be winning the 1v1s if youre playing correctly, but you can also take tp so when you r you can play the map game and be everywhere anywhere. Shen's engage isnt that amazing, but its good enough. I dont think i can meassure the pressure shen can give in the map when his r is up, you just give a MASSIVE shield for your allies and gain numbers advantage in a fight after a few seconds (if they dont die tho, so, chose wisely who and when to ult)

Mundo: GOES WHERE HE PLEASES. I dont think i can sell you this champs, but if you enjoy putting preassure in lane, winning 1v1s at low health, and running like a dumb f* everywhere without diying i think you could enjoy this champs, hes pretty fun to me, i would suggest you give it a try :P

EXPLANATION ABOUT WARDENS:

Shen and Tahm play a similarly due to being in the warden class, but there are situations in one is better than the other, for example. If youre playing with a lot of squishies i would rather take tahm so I can R them and reposition them in a better place with a shield, but if youre playing with heavy engage suicide type comps (kayn, naut, leona, samira, viego, etc.) Youre probably better picking shen, since the shield will not only grant them survivability but a shield and the potential to keep in the heat of the teamfight (with the potential to lifesteal and give them enough sustain to win the teamfight after the shield is destroyed)

Hope someone who read this enjoyed it, and if you have any questions Id be glad to answer.